Slightly differently, I would like a way to keep track of comments that I have upvoted. I often find comments to be more interesting than the articles they are

Slightly differently, I would like a way to keep track of comments that I have upvoted. I often find comments to be more interesting than the articles they are attached to, and sometimes vote up an article I don't particularly like just to make it easier to find the comment later. Sure, yeah, I could maintain my own separate file of comment links, but even so, I think this would be a nice feature of the site.